Bio CH 3 Review

Nitrogen fixation is carried out primarily  by

What animals eat both producers and consumers?

Plants are

The repeated movement of water between the earth's surface and the atmosphere is called 

The following image can be described as...

What is at the base (bottom) of all ecological pyramids?

Which of the following are autotrophs?

A word that means the same thing as consumers is

Temperature, water, and oxygen levels would be considered...

When CO₂ is taken in by plants and sugar and oxygen is produced:

Animals get most of the nitrogen they need by

The movement of energy through an ecosystem is one way

Which of the following are heterotrophs?

Which of the following are recycled through an ecosystem?

The following picture can be described as a...

The following image shows...

The study of organisms and interactions with their environment is called...

Bacteria  break down a dead tree. They are...

Organisms need nutrients in order to

Transpiration is water moving out of

Each of the following is an abiotic factor except